WARNINGS
HYDRAULIC CONNECTION
Cold Water Inlet
Before making the hydraulic connecBon, it is essenBal to clean the feed pipes thoroughly to
avoid the risk of metal or other parBcles entering the tank or the water heater.
Cold water piping should be provided with a 350 – 500 kPa Pressure LimiBng Valve at the
point of cold water connecBon to the water heater. In addiBon to the Pressure LimiBng
Valve, It is a requirement of AS 3500.4 & NZBC G12 that both a Stop Valve and a Non Return
Valve are installed upstream of the Product.
No parts (stop valve, pressure reducer, etc.) must be placed between the pressure limiJng
valve and the cold water inlet of the water heater, apart from a copper pipe.
Note: since limited water discharge from pressure limiBng valve is normal in the heaBng
operaBon, the discharge pipe needs be connected to external drain.
2
Hot Water Outlet
Where a maximum hot water delivery temperature is specified by Local, State or Federal
RegulaBons, a Tempering Valve shall be installed at the Hot Water Outlet, as required.
The included specified Pressure & Temperature Relief Valve must be installed as shown in
the schemaBc. The PTR valve should be connected to a drain point to accommodate
discharge as a result of both water expansion during heaBng, and also pressure fluctuaBons.
A discharge pipe connected to the pressure relief valve is to be installed in a conBnuously
downward direcBon and in a frost-‐ free environment.
WARNING:
The Pressure Temperature Relief valve and drain line must not be sealed or
blocked.
EvacuaJon of condensate
Air passing through the Evaporator may result in some condensaBon. If the humidity of the
locaBon Warrants, it may be preferable to connect a simple polymer hose from the
Condensate Drain to the convenient PTR drain point.
Depending on the humidity of the air, up to 0.25l/h of condensate may form.
Summary of Contents for HPWH 200 Lt
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